It doesn't matter the temperature, I get hot walking in. I walk in wearing a poly blend t-shirt and thin nylon pants. I strip at the stand and pull all my clothes out of my huge pack I carry. I put on new dry merino wool socks, 100% merino wool base layers (I have first lite, sitka, woolrich, and midway usa brand and I can't tell a difference). I have several pieces of the base layers in different weights, so I just put on whatever I need for that temperature and add more or take away as the hunt goes.
